MB sharing increase local OST file which has limit of 50GB
Solution: turn off cached mode for shared mailboxes
I did turn off cached mode for shared mailboxes on profile through regedit:
[HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Cached Mode]
"CacheOthersMail"=dword:00000000
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\15.0\Outlook\Cached Mode]
"CacheOthersMail"=dword:00000000
After that for me no errors appear anymore.